Effect of staggered V-shaped and rectangular grooves copper surfaces on pool boiling heat transfer enhancement using ZrO2 nanofluids

Author(s)

Gajghate, Sameer Sheshrao ^[1] ; Barathula, Sreeram ^[1] ; Cardoso, Elaine Maria ^{[2, 3]} ; Saha, Bidyut Baran ^{[4, 5]} ; Bhaumik, Swapan ^[1]

Affiliation

^[1] Natl Inst Technol Agartala, Mech Engn Dept, Agartala 799046, Tripura - India

^[2] UNESP Sao Paulo State Univ, Postgrad Program Mech Engn, Av Brasil 56, BR-15385000 Ilha Solteira, SP - Brazil

^[3] UNESP Sao Paulo State Univ, Campus Sao Joao Boa Vista, Sao Joao Da Boa Vista - Brazil

^[4] Kyushu Univ, Int Inst Carbon Neutral Energy Res WP I2 CNER, Nishi Ku, 744 Motooka, Fukuoka 8190385 - Japan

^[5] Kyushu Univ, Mech Engn Dept, Nishi Ku, 744 Motooka, Fukuoka 8190385 - Japan

• Document type: Journal article
• Source: Journal of the Brazilian Society of Mechanical Sciences and Engineering; v. 43, n. 2 JAN 22 2021.
• Web of Science Citations: 0

Abstract

Boiling heat transfer has been a trending research area for the last several decades due to its excellent heat removal capacity and direct applications in the distillation and pharmaceutical industries. The present investigation focuses on the augmentation of efficiency for the boiling requiring applications, as highlighted earlier. The experimental and numerical investigations study the effect of staggered V-shaped and rectangular grooved copper surfaces on pool boiling, compared with the smooth copper surface in the ZrO2 nanofluid media. The authors adopted fiber laser engraving technology to form the highlighted microstructures. Furthermore, three different concentrations, i.e., 0.001%, 0.005% and 0.01% by volume, were investigated in a medium having equal volumes of distilled water and ethylene glycol. The thermophysical properties of nanofluid and peculiar microstructures enhanced the relative heat transfer coefficient by 41.48%. The wall superheat drastically reduced due to the micro-level convection on the boiling heat transfer promoted by the microstructures. Besides, the numerical results fitted well with the experimental results with a little deviation (MAE=2.04%). (AU)

• FAPESP's process: 13/15431-7 - Application of nanotechnology in thermal processes and energy conversion
• Grantee: Elaine Maria Cardoso
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 19/02566-8 - Hydrodynamic and thermal characteristics of single and two-phase flow in micro pin fin heat sinks
• Grantee: Elaine Maria Cardoso
• Support Opportunities: Regular Research Grants